EP1991610A2 - Polyolefin-based high dielectric strength (hds) nanocomposites, compositions therefor, and related methods - Google Patents
Polyolefin-based high dielectric strength (hds) nanocomposites, compositions therefor, and related methodsInfo
- Publication number
- EP1991610A2 EP1991610A2 EP07751752A EP07751752A EP1991610A2 EP 1991610 A2 EP1991610 A2 EP 1991610A2 EP 07751752 A EP07751752 A EP 07751752A EP 07751752 A EP07751752 A EP 07751752A EP 1991610 A2 EP1991610 A2 EP 1991610A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- copolymers
- polyhedral oligomeric
- polyolefin
- cage
- ethylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/549—Silicon-containing compounds containing silicon in a ring
Definitions
- This invention relates to a power cable insulation layer. Specifically, the insulation layer is useful for low to high voltage wire-and-cable applications.
- a dielectric For low to high voltage wire and cable applications, a dielectric should have low dielectric losses and very low electrical conductivity. Additionally, when used as an insulating material, a dielectric must have a very high electrical breakdown withstand capability. The insulation material must also meet certain physical, chemical, and mechanical property requirements. Accordingly, there is a continuing need for polymer-based insulation layers of power cables and accessories to have excellent dielectric, physical, chemical, and mechanical properties.
- the present invention is a cable comprising one or more electrical conductors or a core of one or more electrical conductors and having each conductor or core being surrounded by a layer of insulation.
- the insulation layer was prepared from a composition comprising a polyolef ⁇ n and a 3-dimensional, cage-structured nanoparticle.
- the preferred polyolefins are polyethylene polymers, and the preferred nanoparticles are polyhedral oligomeric silsesquioxanes (POSS), polyhedral oligomeric silicates (POS), or polyhedral oligomeric siloxanes.
- PES polyhedral oligomeric silsesquioxanes
- POS polyhedral oligomeric silicates
- polyhedral oligomeric siloxanes polyhedral oligomeric siloxanes
- 3-Dimensional, cage-structured means a molecule having a polyhedral structure.
- Dielectric loss means dissipation factor as measured by parallel plate solid cell tester at 60 Hertz and according to ASTM Dl 50. For example, as used herein and measured at room temperature, a nanocomposite would be stated to demonstrate low dielectric losses when the nanocomposite achieves a dissipation factor that is no more than 0.001 for crosslinked polyethylene composite system, 0.005 for tree retardant crosslinked polyethylene composites system, and 0.02 for ethylene/propylene rubber composites system.
- Electrode withstand means alternating current
- AC AC voltage breakdown strength of composites as measured by an AC breakdown tester with parallel plane electrodes and according to ASTM D 149.
- a nanocomposite would be stated to have a very high electrical breakdown capability when the nanocomposite achieves at least 0.9 kiloVolts/mil at room temperature.
- Nanoparticle means a particle having an average diameter of less than about 1000 nanometers. While the term “diameter” is used herein to describe suitable particle sizes, it should be understood that nanoparticles for use in the present invention need not be substantially spherical in shape. Accordingly, the definition of “diameter” may be applied to nanoparticle such that the average length of the longest line that could theoretically be drawn to bisect the particle is less than about 1000 ' nanometers.
- the invented cable comprises one or more electrical conductors or a core of one or more electrical conductors, each conductor or core being surrounded by a layer of insulation prepared from a composition comprising a polyolefin and a 3 -dimensional, cage-structured nanoparticle.
- Polyolefins useful in the present invention have a melt index in the range from about 0.1 grams per 10 minutes to about 50 grams per 10 minutes. Melt index is determined under ASTM D- 1238, Condition E and measured at 190 degrees Celsius and 2160 grams.
- Suitable polyolefins include polyethylene homopolymers, polyethylene copolymers, ethylene/propylene rubbers, ethylene/propylene/diene monomers (EPDM), polypropylene homopolymers, polypropylene copolymers, polybutene, polybutene copolymers, and highly short chain branched ⁇ -olefin/ethylene copolymers.
- Polyethylene polymer includes homopolymers and copolymer of ethylene and a minor proportion of one or more alpha-olefins having 3 to 12 carbon atoms, and preferably 3 to 8 carbon atoms, and, optionally, a diene, or a mixture or blend of such copolymers.
- the portion of the polyethylene copolymer attributed to the comonomer(s), other than ethylene, can be in the range of about 1 to about 49 percent by weight based on the weight of the copolymer and is preferably in the range of about 15 to about 40 percent by weight.
- alpha-olef ⁇ ns examples include propylene, 1-butene, 1-hexene, 4-methyl-l-pentene, and 1-octene.
- dienes include ethylidene norbornene, butadiene, 1 ,4-hexadiene, or a dicyclopentadiene .
- the polyethylene polymer can have a density in the range of about 0.850 to about 0.950 grams per cubic centimeter.
- the polyethylene polymer also can have a melting temperature of at least about 115 degrees Celsius. Preferably, the melting temperature is greater than about 115 degrees Celsius. More preferably, the melting temperature is greater than about 120 degrees Celsius.
- Typical catalyst systems for preparing the polyethylene polymer include magnesium/titanium-based catalyst systems, vanadium-based catalyst systems, chromium-based catalyst systems, and other transition metal catalyst systems. Many of these catalyst systems are often referred to as Ziegler-Natta catalyst systems or Phillips catalyst systems.
- Useful catalyst systems include catalysts using chromium or molybdenum oxides on silica-alumina supports.
- Useful catalyst systems may comprise combinations of various catalyst systems (e.g., Ziegler-Natta catalyst system with a metallocene catalyst system). These combined catalyst systems are most useful in multi-stage reactive processes.
- the polyolefin is a polyethylene prepared by free-radical polymerization in a high-pressure reactor.
- the 3-dimensional, cage-structured nanoparticle is preferably present in the composition for preparing the insulation layer in an amount between about 0.1 weight percent to about 40 weight percent of the total composition.
- useful 3- dimensional, cage-structured nanoparticles are polyhedral oligomeric silsesquioxanes
- PES polyhedral oligomeric silicates
- POS polyhedral oligomeric siloxanes
- Other useful 3-dimensional, cage-structured nanoparticles include those nanoparticles which provide a high interfacial interaction between the polyolefin and the nanoparticles.
- the 3-dimensional, cage-structured nanoparticle can have reactive functional group, nonreactive functional groups, or both reactive and nonreactive functional groups.
- the functional group can be a hydroxyl, carboxylic, amine, epoxide, silane, or vinyl group.
- the functional group can be useful for compatibilization of the nanoparticles in the insulation composition or with certain components in the composition, including the polyolefin. Other functional groups can be useful for grafting or carrying out other chemical reactions within the composition.
- the insulation composition can further comprise other nanoparticles, antioxidants, curatives, processing aids, anti-blocking agents, anti-stick slip agents, catalysts, stabilizers, scorch retarders, water-tree retarders, electrical-tree .retarders, colorants; corrosion inhibitors, lubricants, flame retardants, and nucleating agents.
- additional components can preferably be present in an amount between 0.1 weight percent to about 10 weight percent.
- additional nanoparticles include silica particles or metallic oxides. Suitable metallic oxides include zinc oxide, titanium oxide, magnesium oxide, and aluminum oxides.
- the composition for preparing the insulation layer may be crosslinkable or thermoplastic.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Abstract
The present invention is a cable having (a) one or more electrical conductors or a core of one or more electrical conductors and (b) each conductor or core being surrounded by a layer of insulation. The insulation layer is prepared from a composition comprising a polyolefm and a 3 -dimensional, cage-structured nanoparticle. The preferred polyolefins are polyethylene polymers, and the preferred nanoparticles are polyhedral oligomeric silsesquioxanes (POSS), polyhedral oligomeric silicates (POS), or polyhedral oligomeric siloxanes.
Description
POLYOLEFIN-BASED HIGH DIELECTRIC STRENGTH (HDS)
NANOCOMPOSITES, COMPOSITIONS THEREFOR,
AND RELATED METHODS
FIELD OF THE INVENTION
This invention relates to a power cable insulation layer. Specifically, the insulation layer is useful for low to high voltage wire-and-cable applications.
DESCRIPTION OF THE PRIOR ART For low to high voltage wire and cable applications, a dielectric should have low dielectric losses and very low electrical conductivity. Additionally, when used as an insulating material, a dielectric must have a very high electrical breakdown withstand capability. The insulation material must also meet certain physical, chemical, and mechanical property requirements. Accordingly, there is a continuing need for polymer-based insulation layers of power cables and accessories to have excellent dielectric, physical, chemical, and mechanical properties.
SUMMARY OF THE INVENTION
The present invention is a cable comprising one or more electrical conductors or a core of one or more electrical conductors and having each conductor or core being surrounded by a layer of insulation. The insulation layer was prepared from a composition comprising a polyolefϊn and a 3-dimensional, cage-structured nanoparticle.
The preferred polyolefins are polyethylene polymers, and the preferred nanoparticles are polyhedral oligomeric silsesquioxanes (POSS), polyhedral oligomeric silicates (POS), or polyhedral oligomeric siloxanes.
DESCRIPTION OF THE INVENTION
"3-Dimensional, cage-structured," as used herein, means a molecule having a polyhedral structure.
"Dielectric loss," as used herein, means dissipation factor as measured by parallel plate solid cell tester at 60 Hertz and according to ASTM Dl 50. For example, as used herein and measured at room temperature, a nanocomposite would be stated to demonstrate low dielectric losses when the nanocomposite achieves a dissipation factor that is no more than 0.001 for crosslinked polyethylene composite system, 0.005 for tree retardant crosslinked polyethylene composites system, and 0.02 for ethylene/propylene rubber composites system.
-l-
"Electrical breakdown withstand," as used herein, means alternating current
(AC) voltage breakdown strength of composites as measured by an AC breakdown tester with parallel plane electrodes and according to ASTM D 149. As used herein, a nanocomposite would be stated to have a very high electrical breakdown capability when the nanocomposite achieves at least 0.9 kiloVolts/mil at room temperature.
"Electrical conductivity," as used herein, means insulation resistance as measured according to ICEA S68-516. As used herein, a nanocomposite would be stated to have a very low electrical conductivity when the nanocomposite achieves no less than 20,000 mega ohms for 1000 feet at 15.6 degrees Celsius. "Nanoparticle," as used herein, means a particle having an average diameter of less than about 1000 nanometers. While the term "diameter" is used herein to describe suitable particle sizes, it should be understood that nanoparticles for use in the present invention need not be substantially spherical in shape. Accordingly, the definition of "diameter" may be applied to nanoparticle such that the average length of the longest line that could theoretically be drawn to bisect the particle is less than about 1000' nanometers.
The invented cable comprises one or more electrical conductors or a core of one or more electrical conductors, each conductor or core being surrounded by a layer of insulation prepared from a composition comprising a polyolefin and a 3 -dimensional, cage-structured nanoparticle.
Polyolefins useful in the present invention have a melt index in the range from about 0.1 grams per 10 minutes to about 50 grams per 10 minutes. Melt index is determined under ASTM D- 1238, Condition E and measured at 190 degrees Celsius and 2160 grams. Suitable polyolefins include polyethylene homopolymers, polyethylene copolymers, ethylene/propylene rubbers, ethylene/propylene/diene monomers (EPDM), polypropylene homopolymers, polypropylene copolymers, polybutene, polybutene copolymers, and highly short chain branched α-olefin/ethylene copolymers.
Polyethylene polymer, as that term is used herein, includes homopolymers and copolymer of ethylene and a minor proportion of one or more alpha-olefins having 3 to 12 carbon atoms, and preferably 3 to 8 carbon atoms, and, optionally, a diene, or a mixture or blend of such copolymers. The portion of the polyethylene copolymer
attributed to the comonomer(s), other than ethylene, can be in the range of about 1 to about 49 percent by weight based on the weight of the copolymer and is preferably in the range of about 15 to about 40 percent by weight. Examples of the alpha-olefϊns are propylene, 1-butene, 1-hexene, 4-methyl-l-pentene, and 1-octene. Suitable examples of dienes include ethylidene norbornene, butadiene, 1 ,4-hexadiene, or a dicyclopentadiene .
The polyethylene polymer can have a density in the range of about 0.850 to about 0.950 grams per cubic centimeter. The polyethylene polymer also can have a melting temperature of at least about 115 degrees Celsius. Preferably, the melting temperature is greater than about 115 degrees Celsius. More preferably, the melting temperature is greater than about 120 degrees Celsius.
Typical catalyst systems for preparing the polyethylene polymer include magnesium/titanium-based catalyst systems, vanadium-based catalyst systems, chromium-based catalyst systems, and other transition metal catalyst systems. Many of these catalyst systems are often referred to as Ziegler-Natta catalyst systems or Phillips catalyst systems. Useful catalyst systems include catalysts using chromium or molybdenum oxides on silica-alumina supports.
Useful catalyst systems may comprise combinations of various catalyst systems (e.g., Ziegler-Natta catalyst system with a metallocene catalyst system). These combined catalyst systems are most useful in multi-stage reactive processes.
Preferably, the polyolefin is a polyethylene prepared by free-radical polymerization in a high-pressure reactor.
The 3-dimensional, cage-structured nanoparticle is preferably present in the composition for preparing the insulation layer in an amount between about 0.1 weight percent to about 40 weight percent of the total composition. Examples of useful 3- dimensional, cage-structured nanoparticles are polyhedral oligomeric silsesquioxanes
(POSS), polyhedral oligomeric silicates (POS), polyhedral oligomeric siloxanes, and other nanoparticles useful in constructing organic/inorganic nanocomposites. Other useful 3-dimensional, cage-structured nanoparticles include those nanoparticles which provide a high interfacial interaction between the polyolefin and the nanoparticles.
The 3-dimensional, cage-structured nanoparticle can have reactive functional group, nonreactive functional groups, or both reactive and nonreactive functional
groups. When the nanoparticles are POSS, POS, or pplyhedral-oligomeric-siloxane nanoparticles, the functional group can be a hydroxyl, carboxylic, amine, epoxide, silane, or vinyl group. The functional group can be useful for compatibilization of the nanoparticles in the insulation composition or with certain components in the composition, including the polyolefin. Other functional groups can be useful for grafting or carrying out other chemical reactions within the composition.
The insulation composition can further comprise other nanoparticles, antioxidants, curatives, processing aids, anti-blocking agents, anti-stick slip agents, catalysts, stabilizers, scorch retarders, water-tree retarders, electrical-tree .retarders, colorants; corrosion inhibitors, lubricants, flame retardants, and nucleating agents. These additional components can preferably be present in an amount between 0.1 weight percent to about 10 weight percent. Examples of additional nanoparticles include silica particles or metallic oxides. Suitable metallic oxides include zinc oxide, titanium oxide, magnesium oxide, and aluminum oxides. The composition for preparing the insulation layer may be crosslinkable or thermoplastic.
Claims
1. An insulation composition comprising:
(a) a polyolefin and
(b) a 3 -dimensional, cage-structured nanoparticle.
2. The insulation composition according to Claim 1 wherein the polyolefin is selected from the group consisting of polyethylene homopolymers, polyethylene copolymers, ethylene/propylene rubbers, ethylene/propylene/diene monomers (EPDM), polypropylene homopolymers, polypropylene copolymers, polybutene, polybutene copolymers, and highly short chain branched α-olefin/ethylene copolymers.
3. The insulation composition according to Claim 1 wherein the 3 -dimensional, cage-structured nanoparticle is selected from the group consisting of polyhedral oligomeric silsesquioxanes (POSS), polyhedral oligomeric silicates (POS), and polyhedral oligomeric siloxanes.
4. The insulation composition according to Claim 3 wherein the 3-dimensional, cage-structured nanoparticle is present in an amount between about 0.1 weight percent to about 40 weight percent of the total composition.
5. An electrical cable comprising one or more electrical conductors or a core of one or more electrical conductors, wherein each conductor or core being surrounded by a layer of insulation prepared from a composition comprising:
(a) a polyolefin and
(b) a 3-dimensional, cage-structured nanoparticle.
6. The electrical cable according to Claim 5 wherein the polyolefin is selected from the group consisting of polyethylene homopolymers, polyethylene copolymers, ethylene/propylene rubbers, ethylene/propylene/diene monomers (EPDM), polypropylene homopolymers, polypropylene copolymers, polybutene, polybutene copolymers, and highly short chain branched α-olefϊn/ethylene copolymers.
7. The electrical cable according to Claim 5 wherein the 3-dimensional, cage- structured nanoparticle is selected from the group consisting of polyhedral oligomeric silsesquioxanes (POSS), polyhedral oligomeric silicates (POS), and polyhedral oligomeric siloxanes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77716406P | 2006-02-27 | 2006-02-27 | |
PCT/US2007/005018 WO2007100794A2 (en) | 2006-02-27 | 2007-02-26 | Polyolefin-based high dielectric strength (hds) nanocomposites |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1991610A2 true EP1991610A2 (en) | 2008-11-19 |
Family
ID=38317726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07751752A Withdrawn EP1991610A2 (en) | 2006-02-27 | 2007-02-26 | Polyolefin-based high dielectric strength (hds) nanocomposites, compositions therefor, and related methods |
Country Status (8)
Country | Link |
---|---|
US (1) | US20100230131A1 (en) |
EP (1) | EP1991610A2 (en) |
JP (1) | JP2009528401A (en) |
CN (1) | CN101389701A (en) |
CA (1) | CA2643571A1 (en) |
MX (1) | MX2008010993A (en) |
TW (1) | TW200741751A (en) |
WO (1) | WO2007100794A2 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5333723B2 (en) * | 2008-07-23 | 2013-11-06 | 住友ゴム工業株式会社 | Rubber composition |
CH701115A2 (en) * | 2009-05-25 | 2010-11-30 | Fischer Georg Rohrleitung | Polyolefin. |
CN102665968A (en) * | 2009-09-17 | 2012-09-12 | 耶路撒冷希伯来大学伊森姆研究发展公司 | Cage nanostructures and preparation thereof |
FR2954451B1 (en) * | 2009-12-21 | 2012-03-02 | Technip France | FLEXIBLE SUBMARINE CONDUIT COMPRISING A LAYER COMPRISING A POLYAMIDE RESIN COMPRISING A POLYEDRIAL OLIGOMERIC SILSESQUIOXANE |
KR101161360B1 (en) * | 2010-07-13 | 2012-06-29 | 엘에스전선 주식회사 | DC Power Cable Having Reduced Space Charge Effect |
KR101362560B1 (en) * | 2011-08-08 | 2014-02-14 | 주식회사 엘지화학 | Cross-linked polyethylene compositions |
CN106167533A (en) * | 2011-08-30 | 2016-11-30 | 博里利斯股份公司 | Including polyacrylic power cable |
CN103193908B (en) * | 2012-01-09 | 2015-09-16 | 宁波大学 | A kind of method and associated catalysts thereof preparing superpower UHMWPE fiber |
WO2014081629A1 (en) * | 2012-11-21 | 2014-05-30 | Polyone Designed Structures And Solutions Llc | Self-lubricating polymer composition and method of lubricating an article |
CN105307301A (en) * | 2014-07-30 | 2016-02-03 | 芜湖市科阳电热材料有限责任公司 | Ribbon heater specially for snow melting and deicing |
CN105323885A (en) * | 2014-07-30 | 2016-02-10 | 芜湖市科阳电热材料有限责任公司 | Special electric tracing band at 36V working voltage |
FR3026547B1 (en) * | 2014-09-26 | 2023-04-07 | Nexans | ELECTRICAL DEVICE COMPRISING A CROSS-LINKED LAYER |
CN105906920A (en) * | 2016-07-04 | 2016-08-31 | 卢永杰 | Low-smoke halogen-free flame-retardant crack-resistant cable material and preparation method thereof |
CN107987387B (en) * | 2017-12-15 | 2020-07-17 | 会通新材料股份有限公司 | High-modulus polypropylene/cage-type silsesquioxane micro-foaming composite material and preparation method thereof |
CN108384129A (en) * | 2018-04-10 | 2018-08-10 | 湖北航天化学技术研究所 | A kind of resistance to ablation EPDM rubber insulation of polyhedral oligomeric silsesquioxane filling |
CN111040296B (en) * | 2019-12-25 | 2022-03-29 | 苏州度辰新材料有限公司 | Polyolefin composition with high mechanical property and preparation method thereof |
CN112063048B (en) * | 2020-09-02 | 2023-04-18 | 上海金发科技发展有限公司 | Low-dielectric high-melt-strength flame-retardant polypropylene material and preparation method thereof |
CN113402799A (en) * | 2021-05-19 | 2021-09-17 | 南方电网科学研究院有限责任公司 | Crosslinked polyethylene composite material and preparation method and application thereof |
CN116144102B (en) * | 2021-11-19 | 2024-05-28 | 广东中塑新材料有限公司 | High-toughness polypropylene material and preparation method thereof |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6362279B2 (en) * | 1996-09-27 | 2002-03-26 | The United States Of America As Represented By The Secretary Of The Air Force | Preceramic additives as fire retardants for plastics |
AU2001249465A1 (en) * | 2000-03-24 | 2001-10-08 | Hybrid Plastics Llp | Nanostructured chemicals as alloying agents in polymers |
CA2324794A1 (en) * | 2000-10-25 | 2002-04-25 | American Dye Source, Inc. | Organic-inorganic hybrid photocurable compositions |
KR100968736B1 (en) * | 2002-05-16 | 2010-07-08 | 다우 코닝 코포레이션 | Flame retardant compositions |
DE10321555A1 (en) * | 2003-05-14 | 2004-12-02 | Degussa Ag | Transparent masterbatches for thermoplastic materials |
DE10321557A1 (en) * | 2003-05-14 | 2004-12-02 | Creavis Gesellschaft Für Technologie Und Innovation Mbh | Upgradable polyolefin surfaces, e.g. lacquerable or dyeable surfaces of films, fibers or injection moldings, carry functionalized polyhedral oligomeric silicon-oxygen clusters |
FI122368B (en) * | 2003-11-06 | 2011-12-30 | Valtion Teknillinen | A process for making a porous plastic film and a plastic film |
-
2007
- 2007-02-26 EP EP07751752A patent/EP1991610A2/en not_active Withdrawn
- 2007-02-26 CN CNA2007800069185A patent/CN101389701A/en active Pending
- 2007-02-26 WO PCT/US2007/005018 patent/WO2007100794A2/en active Application Filing
- 2007-02-26 TW TW096106436A patent/TW200741751A/en unknown
- 2007-02-26 US US12/280,304 patent/US20100230131A1/en not_active Abandoned
- 2007-02-26 JP JP2008556469A patent/JP2009528401A/en active Pending
- 2007-02-26 MX MX2008010993A patent/MX2008010993A/en unknown
- 2007-02-26 CA CA002643571A patent/CA2643571A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2007100794A3 * |
Also Published As
Publication number | Publication date |
---|---|
MX2008010993A (en) | 2008-11-27 |
TW200741751A (en) | 2007-11-01 |
CA2643571A1 (en) | 2007-09-07 |
WO2007100794A3 (en) | 2007-11-08 |
JP2009528401A (en) | 2009-08-06 |
US20100230131A1 (en) | 2010-09-16 |
WO2007100794A2 (en) | 2007-09-07 |
CN101389701A (en) | 2009-03-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20100230131A1 (en) | Polyolefin-based high dielectric strength (hds) nanocomposites, compositions therefor, and related methods | |
KR101649962B1 (en) | Method for producing water tree-resistant, trxlpe-type cable sheath | |
JP4902093B2 (en) | Semiconductive shield composition | |
EP2072575A1 (en) | Polypropylene composition comprising a cross-linkable dispersed phase comprising silanol groups containing nanofillers | |
TW201517064A (en) | Process for degassing crosslinked power cables | |
EP1283527B1 (en) | Electrically insulating resin composition and electric wire or cable both coated therewith | |
EP1226590B1 (en) | An insulation composition for an electric power cable | |
JP2000053815A (en) | Electrical insulating resin composition and electric wire and cable using the composition | |
JP5533351B2 (en) | Insulated wire | |
US20110209897A1 (en) | Olefin-Based Polymers, a Process for Making the Same, and a Medium Voltage Cable Sheath Comprising the Same | |
KR102461767B1 (en) | Insulation composition for high voltage cable and cable having an insulating layer formed from the same | |
JP2022538737A (en) | Crosslinked polymer composition and coated conductor | |
CN109071720B (en) | Crosslinked polymer composition for cable accessories | |
WO2011102957A1 (en) | Adhesion reduction between a metal conductor and an insulation sheath | |
CN114746501A (en) | Halogen-free flame retardant polymer composition | |
US20230070748A1 (en) | Polymer composition | |
EP4195223A1 (en) | Semiconductive polyolefin composition comprising carbonaceous structures, power cable comprising the same and use thereof | |
WO2016097254A1 (en) | Power cable polymer composition, power cable and uses with advantageous properties | |
KR20240060705A (en) | polymer composition | |
KR20230130052A (en) | composition | |
CN117362812A (en) | Crosslinked polyolefin material and preparation method and application thereof | |
JP2022535389A (en) | covered conductor | |
WO2016097253A1 (en) | Power cable polymer composition and power cable with advantageous properties | |
JP2012015066A (en) | Insulated wire | |
JP2012248347A (en) | Insulation wire |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080929 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20090105 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20090818 |